Car truck



. E. W. WEBB Feb. 25, 1936,

CAR TRUCK Filed July 5, 1934 2 Sheets-Sheet 1 Ej W. WEBB CAR TRUCK Feb..25, m35,

Filed July 5, 1934 2 Sheets-Sheet 2 nml m' IN VEN T0@ [a w//v nf,W156i?.

Patented Feb. 25, 1936 UNITED STATES CAR TRUCK Edwin W. Webb, Chicago,Ill., assigner to Standard Car Truck Company, Chicago, Ill., acorporation of New Jersey Application July 5,

10 Claims.

'I'his invention relates to car trucks.

It is the general object of the invention to provide novel and improvedmeans of simple and eiicient construction for breaking up or minimizingspring harmonics in car trucks.

To this end, the invention consists in the novel parts and novelcombinations of parts hereinafter defined in the claims and described inthe following specification, made in connection with the accompanyingdrawings, wherein like reference characters refer to the same or similarparts throughout the various views, and, in which,

Fig. 1 is a View in side elevation illustrating portions of a car truckembodying the present invention, certain of the parts being broken awayand shown in section;

Fig. 2 is a vertical section taken on the line 2 2 of Fig. 1, asindicated by the arrows;

Fig. 3 is a vertical section taken on the line .3 3 of Fig. 1, asindicated by the arrows; and

Fig. 4 is a horizontal section taken on the line 4-4 of Fig. l, asindicated by the arrows.

Referring to the drawings, there are illustrated portions of a sideframe of a freight car truck including compression member 5, tensionmember 6 and bolster columns 1 extending between the compression andtension members and defining the sides of a lateral bolster opening 8within which one end of a bolster 9 works. The tension member 6 belowthe opening 8 is provided with a widened spring plank seat I whichprojects both inwardly and outwardly beyond other portions of the sideframe. A spring plank I I rests at its end in usual fashion on thespring plank seat I0. A spring plate I2 rests on the end of the springplank II and supported on this plate are a number of inner and outercoiled springs I3, the inner springs being transversely spaced from theouter springs. These coiled springs bear at their upper ends against aplate I4 located below the bolster 9.

The bolster columns 1 below the portions against which the bolster worksare forked to provide passages I5 through which a leaf spring I6extends. This leaf spring extends longitudinally of the side framemidway between the inner and outer coiled springs I3 below the bolster9. The various leaves of the spring are held in assembled relation bymeans of a central clip I8 which encircles the leaves and bears againstthe plate I4, the clip being restrained from movement longitudinally ofthe side frame by a pair of spaced downwardly projecting lugs I9 carriedby the plate I4.

The compression member of the side frame for- 1934, Serial No. 733,746

(Cl. 10S-206) wardly and rearwardly of the columns 1 is equipped withdownwardly projecting, apertured, spaced, ears 29 within which heavytransversely extending pivot studs 2l are mounted. Hangers 22 dependfrom these pivot studs and each of these hangers is preferably providedat its upper end with a transverse hub 22a encircling a pivot stud 2lbetween the ears 29 through which the stud runs and each hanger hasa-lower rectangular portion 22o, the bottom of which forms a support forone end of the leaf spring I5. The bottoms of the rectangular portions22h of the hanger are provided with transverse slots 22e within whichdownturned ends IEa of the lowermost leaf of the leaf spring I6 arereceived.

It will be seen that the bolster 9 is supported partially by the coiledsprings I3 which are in' turn supported from the tension member 6 of theside frame and that the bolster 9 is also supported partially by theleaf spring I6 which is in turn supported by the hangers 22 dependingfrom the compression member 5 of the side frame. The stresses andstrains imposed on the side frame through its support of the bolster aremore evenly distributed than is the case where coiled and leaf springsare supported entirely from the tension member alone. As the hangers 22are free to swing, the leaf spring' I6 will be flexibly supported at itsends. The coiled and leaf springs mutually cooperate to sustain thetruck bolster and its load and the coiled springs dampen the naturalharmonic action of the leaf spring and the leaf spring dampens thenatural harmonic action of the coiled springs. This eliminates ormaterially reduces vibrations in the truck.

It will be understood that trucks embodying the present invention may beequipped with lateral motion devices permitting lateral motion of thebolster, if so desired. These lateral motion devices may be interposedin the usual manner between the lower side of the bolster and thevarious springs I3 and I6.

It will, of course, be understood that various changes may be made inthe form, details, arrangement and proportions of the various partswithout departing from the scope of the present invention.

What is claimed is:-

1. In a car truck, a side frame having compression and tension membersand bolster columns extending between the said members and defining alateral opening, a bolster working within said opening, a springsupported by said tension member and assisting to support said bolsterand bolster and a bar spring supported from compression member belowsaid bolster and in turn assisting in supporting saidboister:

pression and tension members and bolster columns extending betweenthe;'saidrnemberse` andf;

defining a. lateral opening, a bolster workingwithin said opening,coiled springs supportedby'said tensiommember andassistingitosupport-saidbol-A- sterandra-:ibarf'springg supported. bysaid-compres?-v s-iontgmember, extending--longitudinallyo thesidefframe-across:said1bolster belowfthe-same-fandalsoi assisting toV supportthe;L bolster;

y bolster.:

62,111; a'.- car truck,l a sidei-flramefhafving; compression: and-`tension;v membersy, columns extending: between-'said members; and;defining; aflateral-f liolsten opening;` abolster workingsl withim said;opening, springsi4 supported fromf said tension; membenandzin; turn@assisting; to supportf saidv bolster; hangers;k pivotallyY connected;to: and. de' pendingfrom said'l compression member-.M and l. aI bar;springA supported by' said hangersf below.- thel bolster and ini turn:assisting? in: supporting said bolster:`

7': In: a-.carzt-ruck, a sideirame having. af lateral opening, a bolsterhaving an end disposed within said opening, coiled springs supportedfrom said side frame and assisting in supporting the end of saidbolster, a leaf spring disposed below said bolster and assisting insupporting the same, said leaf spring extending longitudinally of theside vframe and projecting across said opening and hangers pivotallymounted on upper portions of the side :frame angtprojeclting downwardlytherefrom'an'd u'ponwliich the ends of saidleaf spring are supported.

" 8: In a car truck, a side frame having tension and; compressionmembers and bolster columns extending between said members and defininga lateral opening;.a2bol's't'er having an end working 4. In a car truck,a sidefraime'havingccmwitliiii` saidllaterai opening, coiled springssupportedy on rsai'cft'ension member and in turnpartiallyfsupportingsaid bolster, a bar spring extending longitudinallyof the side frame below the bolsterandin turn partially supporting saidbolster, said columns having spring-passagestthrough whiclifsaidibar`springZ extendslzanhangers pivota'lly mounted-ion -saidf compression.member: and; dependingiV therefrom and;y upon| which. the: endsI ofwhich saidl-barspring=-rest.v I .u

9.1-,Thestructuredeli-ned.` in.y claimd, saidfbar springehavingdewnJturned=ends andfsaid hangersl havingslots-intheir lowerportionsreceiving said downturnedends.

1.0. Inz-a cartruck, aside-framef-havingfcome pression 'anditensionamembers andV columns. ein.t tending. between-said, members andvdefining, at lateral bolster opening,y said" tension member.- belowsaidopening; havingdnner` and outer projec-` tions, a bolsterA workingwithin` 'sa-id openingpy inner and outer coiled springsssuppox-'tedVrespec tivelyl on saidinner and outer; projectionsaand. in turnassisting,- tor supportv said: bolster, saidinner and. outerspringsfbein'gf spaced.; from.y each other transverselyfo thsidefra-me,hangerscarried: said compression,mernber-'andy depending: downwardlyytherefromfy and"` aL bar spring below`l` said?bolster:extendingglongitudinally ofsaidside frame betweenfsaid-innerfand outer` springs'suppontem by. said1hangersi-andf-- inv turn;assisting tof-supporti said bolsteri, Y

' EDWINYW; WEBB.`

